Intervention: patients with at least 3 months of neck pain without radiation to the arm (only radiation beyond the shoulder) will be randomized in 2 groups. The first group (RFD + local anesthesia-group=intervention group) will receive RF treatment adjacent to the medial branch innervating the cervical facet joints after the application of bupivacaine 0.5 ml (0.25%). The second group (local anesthesia-group=control group) will only receive the application of 0.5 ml bupivacaine (0.25%) adjacent to the medial branch. The only difference between the two groups is the RF-denervation of the medial branches.